离散系统单位响应初始条件的确定

A method for finding the initial conditions of discrete-time system's impulse-response sequences

根据差分方程各项移序特性,对线性时不变离散系统确定求解单位响应的初始条件时存在的模糊问题,即为什么可以及如何用h(k)在k<0时的值来计算单位响应所需的待定系数,从理论上进行了分析。给出一种简捷的求解单位响应初始条件的确定方法。

According to the property ot every item's time shitting of a difference equation, this paper explains why and how the value of h (k), when k<0, can be used as the initial conditions of a difference equation of a linear discrete-time system. While it gives a method for finding the simplest types of initial conditions of the linear discrete-time system's impulse-response sequences.